Method of preparing plates for the printing of impressions



May 11 1926. 1,584,368

E. l.. GElGl-:R

METHOD OF PREPARING PLATES FOR THE PRINTING F IMPRESSIONS//////////Vl////////////////////I//////l ATTORNEYS May 11 1926.

E. L. GEIGER METHOD oF PREPARING PLATES FOR THE PRINTING oF TMPREssIoNs2 Sheets-Sheet 2 Filed March 28, 1925 icky-.15"

A'r-romcevs Patented May l1, 1926.

' unirse stare EARL L. GEIGER, OF DAYTON, OHIO.

METHOD OF PREPARING PLATES FOB. THE PBINTNG OF IMPRESSIONS.

Application led March 28, 1925. Serial No. 18,961.

My invention relates to apparatus and method of preparing and producingplates for the printing of impressions therefrom.

Itis my object to produce plates Jtor printing impressions therefromadapted to vary ing uses and particularly adapted tor use in recordingmachines such as taximeters and the like.

It is an object ot my invention to be able to provide such plates infinished form suitably coated with a desirablel metal, properly beveled,shaped, drilled and counter-sunk with suitable serial numbers casttherein so that each plate will have its own number.

Heretofore it has been necessary to saw the individual plates from amaster plate, bevel the plate on a special machine and separately drilland countersink each ot said plates.

It is a further object of my invention to provide means ot locatingtemplets which term countersunk holes at the desired points in thecasting plates to eliminate drilling and countersinking. Y

Referring to the drawings:

Figure 1 is a plan view of an electrotype pattern.

Figure 2 is a plan view ot the templet and wax beneath.

Figure 3 is a section through the templet, wax impression plate andframe holding the wax.

Figure 4 is a plan view ot the impression upon the wax.

Figure 5 is a section through the wax upon which a copper coating hasbeen deposited, the frame and the metal cast upon the copper coating ofthe wax.

Figure 6 is a view ot the cast metal plate 40 which has been taken fromthe wax showing the openings mortised in the plate tor the insertion ofthe serial numbers.

Figure 7 is a section through the metal plate, paper sheet and frame,which combi- 45 nation is put in a steam table under a molding brush.

Figure 8 is a plan view of the paper matrix.

Figure 9 is a plan view ot the paper ma- 50 trix with a casting frame inposition.

Figure 10 is a plan view ot the composite plate cast with its lugs andbeveled edges, serial numbers and lettering, which plate is later sawedinto the separate plate shown in Figure 12.

Figure 11 is a section on the line 1111 ot Figure 9.

Figure 12 is a plate. .Y

Figure 13 is a section through the casting box, matrix, and plate,showing the templets in position.

Figure 14.4 is a top plan of the matrix ready to receive molten metalwith templets in position. A

Referring to the drawings in detail, 1 is an electrotype plate havingvarious conigurations 2 mounted thereon in the usual manner dependingupon the text matter desired. A templet 3 is formed of a plate of metalhaving cutaway portions 4 which are oblong with recessed portions 5 sothat when the plate 1 is inserted in the space i it can be lifted byinserting an instrument or a finger in the opening 3 under the edge ofthe plate 1.

A frame 6 is provided in which there is a bed oi" wax 7. The templet 3is laid on this bed of wax and the electrotype 1 is put in thesuccessive openings 4 and impressed with the wax.

This results in the wax taking the impression from the text matter 2 onthe 'face of the elect-rotype plate 1 as will be seen in Figure t. Acoating of thin copper is deposited electrolytically upon the surface 8ot the wax forming a iilm 9 as shown in Figure 5. Molten metal is thenpoured upon plan view of thek finished this copper surface and the plateshown in Figure 6 is Vformed.

This plate is designated 10. This plate 10 has upon it the embossed textmatter 11. The plate hasapertures 12 cut therein or mortised so that theblocks containing the serial numbers can be inserted therein in theseopenings. This iinished plate 10 is then placed in the usual steam table'being subjected to about fifty pounds pressure. In the press with theplate is the paper matrix sheet 13 and a frame 14. This results inproducing a paper matrix 13 with the depressions 15 indicating the textmatter. Upon this paper matrix are arranged marginal casting iframemembers 16 having recessed portions 17 and beveled edges 18 over whichpaper strips 19 have, been pasted. These strips are coated with talc.The casting frame members and the paper matrix are pressed in a maintrame` 20. Stereotyped metal is poured on the paper matrix so that theresulting plate shovvn in Figure 10 is secured in which the recessedmargins 2l are beveled. Between these margins are the rectangularprojections 22 Which have been formed by the rectangular recesses 17 inthe casting frame. The paper strips are pasted on the casting frame topre-vent peeling of the metal and the talc is used to prevent sticking.

The finished plates are `formed by simply sawing the master plate inFigure l() into five plates such as sho Wn in Figure l2 after havingdrilled and countersunk the plates at 23. Each plate has its serialnumber and the proper embossed text matter thereon and comes from themolding frame With a beveled edge so that it need not be milled andotherwise treated by machined tools to finish it.

After securing the finished plates I then give them a nickel bath which`materially improves their Wearing and printing qualities and extendstheir life.v

It will be understood that I desire to comprehend Within my inventionsuch modifications as may be necessary to adapt it to varying conditionsand uses.,y

Referring to Figure 1 it Will be noted that slight indentations 24 areprovided in the master plate l by any suitable instrument.V Suchindentations result in raised portions 25 in the material With Which theplate l comes in contact.

These locating depressions or extrusions continue throughout the plates,matrix etc. until they appear as depressions in the matrix paper 13,.These points so located are then punched and steel templets consistingof a'cylindrical shaft 26, a conical portion 27 and a restricted pinportion 28 are lo.- cated in the matrix, the pin portions being placedin the holes in the matrix. Thetapered portions 27 form the countersunkpart of the resulting plate, While the cylindrical portions 28 form` theholes in the plate. Thus the result-ing plate turns out countersunk Withholes in proper position to save drilling and countersinking.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is:

1. In a method of forming printing plates, imprinting in a yieldingsubstance from a master plate, casting a plate from the imprintedsubstance, imprinting in bas-relief upon a fibrous substance underpressure, providing a frame around the margin of the fibrous substance,pouring metal Within said frame on said fibrous substance and severingthe plate sosecured into multiple plates so that the desiredconfiguration is imparted to the plate. y

2. In a method of forming printing plates, imprinting in a yieldingsubstance from a master plate, casting a plate from the imprintedsubstance, imprinting in bas-relief upon a fibrous substance underpressure, providing a frame around the margin of the fibrous substance,pouring metal Within said frame on said. fibrous substance, severing theplate so secured into multiple plates so that the desired configurationis imparted to the plate, and electroplating the resulting plates.

3. In a method of forming printing plates, imprinting in a yieldingsubstance from a master plate, casting a plate from the imprintedsubstance, imprinting in bas-relief upon a fibrous substance underpressure, providing a frame around the margin of the fibrous substance,pouring metal Within said frame on said fibrous subst-ance, severing theplate so secured into multiple plates so that the desired configurationis imparted to the plate, electroplating the resulting plates, anddrilling and countersinking the resulting plates.

4t. In a process of producing a printing plate, selecting a masterplate, positioning said master plate on a Wax bed and impressing ittherein With successive impressions in different portions of the bed,copper plating the surface of said Wax, casting a plate of metal fromthe copper plated surface of the `Wax, impressing the Wax so securedinto a paper matrix, placing a paper matrix in a fram-e, arrangingmarginal casting frame members` about the margin thereof to give theproper configuration to a plate cast from said paper matrix and castinga. plate from said paper matrix.

5. In a process of producing a printing plate, selecting a master plate,positioning said master plate on a Wax bed and impressing it thereinWith successive impressions in different portions of the bed, copperplating the surface of said Wax, casting a plate of metal from thecopper plated surface of the Wax, impressing the plate so secured into apaper matrix, placing a paper matrix in a frame, arranging marginalcasting frame members about the margin thereof to give the properconfiguration to a plate cast from said paper matrix, pasting paperstrips over the margin of a portion of said frame to prevent the metalsticking thereto,- and casting a plate from said paper matrix.

6. In a process ofvproducing a printing plate, selecting a master plate,positioning said master plate on a Wax bed and impressing it thereinWith successive impressions in different portions of the bed, copperplating the surface of said Wax, casting a plate of metal from thecopper plated surface of the Wax, impressing the plate so secured into apaper matrix, placing a paper matrix in a frame, arranging marginalcasting frame members about the margin thereof to give the properconfiguration to a plate cast from said paper matrix, pasting paperstrips over the margin of a portion of said frame to prevent the metalsticking thereto, putting talc on said paper to prevent stiel;- ing, andcasting a plate from said paper matrix.

7. In a process of producing a printing plate, selecting a master plate,positioningsaid master plate on a Wax bed and impressing it therein withsuccessive impressions in different portions of the bed, copper platingthe surface of said Wax, casting a plate of metal from the copper platedsurface of the Wax, impressing the plate so secured into a paper matrix,placing a paper matrix in a frame, arranging marginal casting framemembers about the margin thereof to give the proper configuration to aplate cast from said paper matrix, pasting paper strips over the marginof a pci-tion of said frame to prevent the metal sticking thereto,putting talc on said paper to prevent sticking, casting a plate fromsaid paper matrix, severing said last mentioned plate into separableplates, and drilling and countersinking said separable plates.

8. In a process of producing a printing plate, selecting a master plate,positioning said master plate on a Wax bed and impressing it thereinWith successive impressions in different portions of the bed, copperplating the surface of said Wax, casting a plate of metal from thecopper plated surface of the Wax, impressing the plate so secured into apaper matrix, placing a paper matrix in a frame, arranging marginalcasting frame members about the margin thereof to give the properconfiguration to,a plate cast from said paper matrix, pasting paperstrips over the margin of a portion of said frame to prevent the metalsticking thereto, putting talc on said paper to prevent sticking,casting a plate'from said paper matrix, severing said last mentionedplate into separable plates, drilling, countersinlring, andniclelcoating said several plates.

9. ln a method of producing a printing plate, forming a masterelectroplate, placing a templet on a Wax bed, inserting the electroplatein successive openings in the templet and impressing the electroplate onthe Wax, removing the electroplate and templet, copper coating thesurface of the wax impressed, casting a metal plate therefrom, mortisingsaid plate and inserting lserial number type in the mortised openings insaid plate, impressing the finished plate into a paper matrix, arranginga casting frame With partially beveled edges around the margin of saidpaper matrix in a frame, pouring metal on said paper matrix, removingthe plate so cast, severing into sections, drilling, countersinlring andnickelplating said plate.

lO. In a method of producing a printing plate, selecting a master plate,impressing it into Wax, copper plating the Wax surface, casting a platefrom the copper plated surface, impressing a paper matrix With theplat-e, placing the paper matrix in a frame, drilling holes in the papermatrix Where the extrusions have made `depressions from the plate, theextrusions coming from the original indentations on the master plate,placing templets in the holes in the matrix and arranging marginalcasting frame members about the matrix and pouring metal on the matrix,whereby a plate is formed with suitable apertures therein.

t ln testimony whereof, l aiiix my signaure.

EARL L. GEIGER.

